Edward weissenborn



minted giedre @wat (twine.

Leners Patent No. 95,861, dazeiioczober 12, 1869.

PENCILHATTACHMENT.

The Schedule referredto in these Lettere Patenten! making part of thesame.

To all whom 'it may concern.-

companying drawing, forming partof this specification, v

and in which- 'Figure l represents a longitudinal view of my improvedpencil-attachment, in illustration of its application as apoint-protector to the pencil;

Figure 2, a similar View of the same detached from the pencil, and whenused as a knife;

Figure 3, a like view of the attachment when used 'as a compass-leg inconnection with the pencil; and

Figure 4, a transverse section through the line x :c in fig. 2.

Figure 5 represents a longitudinal sectional view of a modifiedconstruct-ion of the attachment.

Similar letters of reference indicate corresponding parts.

My invention relates 'to a pencil-attachment for use by draughtsmen andothers; and

It consists- First, in a compass-leg, pivoted or jointed to apencil-clasping stock, through which an ordinary leadpencil isprojected, and made capable of sliding, and so that said pencil, whichforms the other leg of the compass, serves as the handle to the latter,while the attached leg, which constitutes the stationary or centringone, is preferably made capable of being thrown up against the pencil orout of the way when the latter` alone is required to be used.

Also, in the construction of the compass-leg, so as to form aknife-blade, and in the threefold combination of'acompass-leg,-aknife-blade, and a pencil-point' protector.

Referring to the accompanying drawing- A 'represents asheet-lnetal'clasp or stock, constructed so as to be capable of beingslid on and over an ordinary writing or drawing-pencil, B, and so thatthe pencil, when projected through it, is held therein from too easilyslipping, but not so that it .cannot be adjusted to any requiredprojection through the same.

Pivoted or jointed to this pencil-clasp, on one side of it, as by ascrew or rivet, a, passing through lateral extensions, b b, is acompass-leg, C, which is so connected with the pencil-clasp as that itmay be turned down to form the centring leg of a compass, while thepencil B, which also serves as the handle of the compass, constitutesthe other and scribing-leg thereof, and may, by the jointed attachmentof the leg C to the clasp and sliding tit of the pencil through the lati4162.467" WW1?" ter, be adjusted as desired, relatively to the leg G,accordingly as quick or slow curvatnres are required to be struck.

Or the compass-leg C may be reversed or turned up, relatively to thepoint c of the pencil, as shown by red lines in fig. 3.

This compass-leg C, I prefer to invest with a double function or use, byconstructing a portion of its body, between its rounded point or forwardend, d, and back portion, e, to form a knife-blade, f, whichmay be usedfor sharpening the pencil, by slipping it or the clasp carrying it offthe latter, and opening or turning it back, as represented in iig. '2.

The pencil-clasp or stock .A is provided at its bac-k or upper'end witha hollow rubber cap, l), within which the pencil, by rcversing'itsposition' throughl the clasp, may be adjusted to protect its. point, asrepresented in iig. l.

In this Way, the compass-leg attachment, by or through its rubber cap,is made to prevent injury to the point of the pencil, when carrying thelatter in the pocket or otherwise, and the compass-leg being shut iu`toward the pencil, with the cutting-edge of the knife innermost,presents no objectionable or dangerous protrusion.

The hollow rubber cap may also be used for erasingpurposes.

A pencil-attachment thus constructed, forms a cheap and most usefulappendage, which may be put 'on or taken o" from a pencil ci" ordinarydescription,

-portion l may be hinged to the body of the leg or knife-portion f,toadmit of its being turned up and closed under a suitable hook 0rcatch-formation, for protection of the person or clothes when carryingthe pencil with its attachment in the pocket, andso that said point maybe turned down or opened when using the attachment in connection withthe pencil.

This modified construction of the attachment un- .der the twoadjustments of the compass-leg point is 'while the clasp or stock A may,by suitably .sliding or adjusting the pencil .'serve as a protector tothe latter or its point.

What I claim,.and desire to secure by Letters Pat- 1. A pencil-clasp orstock, with compass-leg jointed thereto, for use, in vconnection with apencil, as the scribing-leg l.ind handle of the compass, substantiallyas specified.

2. The compass-leg C, constructed to form a. knifeblade, f, and jointedto the pencil-clasp oir-stock A, essentially as described.

3. A pencil-attachment, constructed to combine the threefold purposes oruses of a compass-leg, a knife, and a pencil-point protector,essentially as herein set forth.

EDW. WEISSENBORN.

Wibnessesz FRED. HAYNES, J. W. OOOMBs.

